CXJill. URAMlNEJi. 4:33 



Outer glumes short but visible, ilovveriug glume 



and paleii membranous 40. Malteuuunia. 



{Or^za (Rice) is only known in a cultivated state. EhrharLa will be 

 found in Fesiucacece.) 



Subtribe 4. CHLORiUEyi:. 



Spikes simple, solitary, terminal. 



Spikelets 1-flowered, indented in the rachis. 



Flowering glumes hairy 41. MiCiiOCULOA. 



Spikelets 4-5-llowered, 2 lowest tloworing 



glumes sterile, 3rd fertile 42. Ctenium. 



Sj)ikclets 4-flowered, lowest flowering glume 



fertile, upper sterile 43. IlAiiPECULOA. 



Spikes 2 or more together, digitate or fascicled, 

 rarely somewhat panicled. 



Spikelets with 1 perfect flowering glume and a 

 rudimentary upper one, both outer glumes 

 pointless 44. Cynodon. 



Spikelets with 1 perfect flowering glume and 

 rudimentary upper one, 2ud outer glume 

 awned below the apex 45. EusTACKYS. 



Spikelets many-flowered, several flowering 

 glumes and a tei'minal imperfect one. Flow- 

 ering glume pointed 46. DACTYLOCTENirM. 



Spikelets narrow, many.flowered ; several 

 perfect flowering glumes, terminal one im- 

 perfect. All glumes awnless and blunt . . 47. Eleusine. 



Spikelets many-flowered, 1-3 perfect flowering 

 glumes and several imperfect. Flowering 



glumes long-awned . 48. Chloris. 



Spikes racemose panicled or glomerate. 



Spikelets 1-flowered 49. Spartina. 



Spikelets several-flowered, two lowest flowering 



glumes sterile. Spikes few, 4-7 . . . .50. Tetrachxe. 



Spikelets shortly stalked, several-flowered, lower 



flowering glumes perfect, in racemose spikes. 51. Leptociiloa. 



Spikelets very shortly stalked, several-flowered, 

 lower flowering glumes perfect, in compound 

 and decompound racemes 52. Diplachne. 



Subtribe 5. AvENACEiE. 



Spikelets with lowest flower only fertile, upper 

 rudimentary or male. 

 Lowest flowering gliime very thick and strongly 



awned ; upper rudimentary 53. -Anisopogox. 



Lowest flowex'ing-glume awailess ; upper male, 



or in the Cape species neuter, awned . . . 54. IIoLCUS. 

 Spikelet, except m 1 Cape species of Trisetnni, 

 with 2 or more lower flowers fertile. 



Flowering glume never awned 55. AcnNERlA. 



Flowering glume with a slender awn between 

 the middle and base. Spikelets small, oblong 



or ovate 56. AiRA. 



Flowering glume long-awned, cleft at the top 

 into 2 acute-pointed teeth. 



9 



F 



